package com.meepo.sdk.utilsimport java.security.MessageDigestobject DigestHelper {    fun md5(input: String): String {        val digest = MessageDigest.getInstance("MD5")        val byteArray = digest.digest(input.toByteArray())        return with(StringBuilder()) {            byteArray.forEach {                val value = it                val hex = value.toInt() and (0xFF)                val hexStr = Integer.toHexString(hex)                //println(hexStr)                if (hexStr.length == 1) {                    //this.append("0").append(hexStr)                    append("0").append(hexStr)                } else {                    //this.append(hexStr)                    append(hexStr)                }            }            this.toString()        }    }}